valutazioni - 4, GPA: 4.5
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Facilità d'uso
Measure the lumber with calipers to determine its exact thickness. 2. Move the cutterhead to 1.16" under the thickness of your lumber and feed your test board through the planer. 3. Turn the handwheel one half rotation and run the board through once more. Turn the board over and repeat. Figure 30. Screw for column adjustment. -30- G0550/G0551 15" Planer Knife Inspection The Model G0550/G0551 Planer has a three- knife cutterhead. The cutterhead is located in the head casting and rotates on two sealed bearings. No lubrication is needed for the life of the bearings. Because of normal use and wear, the knives must be periodically sharpened, replaced or adjusted. Adjustment from the factory must also be checked prior to use due to possible movement during shipment. To inspect the knives: 1. Disconnect the machine from the power source! 2. Lower the table and place the gauge block or a Rotocator under one end of the cutterhead. 3. Remove the V-Belt cover and carefully rotate the belts to turn the cutterhead until the first knife is at bottom dead center. Adjust the cutterhead height until the knife barely touches the top of gauge block. Note—Rock the cutterhead back and forth to determine bottom dead center. 4. Slide the gauge block to the opposite side of the cutterhead and check the same knife, rocking back and forth to determine bottom dead center. — If the knife does not contact the gauge block, use a feeler gauge to determine the difference between one side and the other. See Figure 31. — If the knife bottoms out on the gauge block, repeat steps 1-3, but start on the opposite side of the cutterhead. Figure 31. Using the feeler gauge to measure the gap. 5. The variation between one side and the other should not be greater than 0.004". Repeat steps 1-4 on the other two knives. Again, the variation between all three knives should not be greater than 0.004". Once you have completed inspection on all three knives, you will able to determine whether or not there is a need to adjust the knives in the cutter- head. Proceed to the appropriate section, depending upon whether you are using the jack screws or the springs. When making adjustments, all three knives must be adjusted the same. DO NOT adjust one knife without adjusting the others as well. Improper knife height adjustment can result in damage to knives, poor planer performance and possible operator injury. NOTICE Always adjust the thickness scale after adjusting the knives. G0550/G0551 15" Planer -31 Knife Sharpening Knife Setting For the best results, it is best to have planer knives sharpened by a professional sharpening service which has the grinding and measurement equipment to assure that the knife cutting geometry is maintained at optimum levels. Knife sharpening is a procedure that requires some care and precision, otherwise, a set of blades can be easily ruined. Knives should always be ground as a set so they can be properly matched. Unequal material removal can result in an unbalanced cutterhead which can affect not only planing surface quality but ultimately the life of the cutterhead bearings. Your planer knives can be sharpened by a blade hone. See the “Aftermarket Accessories” subsection at the back of this manual for more information. The process of setting the knives in the cutter- head will come into play whenever you sharpen or replace, or after determining that setting is necessary during the initial setup. The knives lock into the cutterhead with wedge type gibs. Springs under each knife provide an upward pressure to help ease the setting process. Jack screws under the knives allow fine tuning to help in the setting process. To set the knives: 1. Disconnect the machine from the power source! 2. Remove the upper cover to expose the cutterhead. 3. Choose a knife to begin with and loosen the gib bolts just enough until the springs push the knife upward. Figure 32 illustrates the features of the cutter- head that are mentioned in this section. Figure 32. Proper knife setting jig placement. -32- G0550/G0551 15" Planer 4. Place the knife setting jig over the knife on the cutterhead as shown in Figure 33. The knife setting jig will push the knife into position in the cutterhead. Figure 33. Proper knife setting jig placement. 5. While holding the position of the knife setting jig, adjust the jack screws, located on each end of the knife, until they make contact with the bottom of the knife. 6. While holding the position of the knife setting jig, tighten the gib bolts down again in the cutterhead (Figure 34). Tighten the bolts evenly from the middle, working toward the ends. 7. Repeat these steps for the other two knives. Figure 34. Tightening gib bolts in cutterhead. Chip Breaker The chip breaker is located on the top side of the planer and extends down around the front of the cutterhead. Its function is to prevent tear-out or deep, unregulated gouging as the knives remove material. The chip breaker works by breaking the woodchips as they are being...